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‘ United States Patent

[11]

[191

{45] Mar. 23, 1976

Brobeck et al. [54]

POlNT-OF-SALE SYSTEM AND APPARATUS

[7 5]

Inventors; William M. Brobeck, Orinda; John S. Givins, Jr., Berkeley; Philip F. Meads, Jr., Oakland; Robert E.

[57]

keyboard terminals and associated cash drawers in

June 10, 1974

communication with a control chassis having a micro

computer, a printer and power supply. Each keyboard

[21] Appl. No.: 477,844

terminal has manually operable keys for designating

[52]

US. Cl. ............................ .. 235/168; 340/l72.5

[51] [58]

Int. Cl.2 .................. .. G06F 15/02; GO6F l5/2O Field of Search ......... .. 235/l68, I64, I60, 159,

235/l56; 340/1725 [56]

References Cited UNITED STATES PATENTS

3,253v132 3,267.436

5/1966 8/[966

3,330,947

7/l967

lbw-403

lZ/lg-H

‘

the various items for sale and associated display de vices which, under the guidance of the computer, dis play the number of each item ordered. Function keys are provided for instructing the computer to total the sales price of each order with automatic tax calcula tion. Provision is made for the temporary storage of one or more orders with a recall feature that redis

plays the order. Numeral keys are provided at the key

Pendlewn ,,,,,,,,,,,,,,,,,,,,,,,,, __ 235/163 Alpert et al ............. .. 340/1725

board to give an alternate method of incrementing and decrementing item quantities and to provide means

Alpert ct al....

.... .. 235/!76

for effecting price and tax changes. Order changes

Ash‘) '3‘ al ---- -

3‘Kl/172-5 ''' "

may be effected at any time prior to the total sales price ‘calculation that enters the sales price and item

3:32? e‘ al" ‘

ABSTRACT

A point-of-sale terminal system including one or more

[73] Assignee: Transac'tron, lnc., Berkeley, Calif. Filed:-

Primary Examiner-David H. Malzahn Attorney, Agent, or Firm-Eckhoff, Hoppe, Slick, Mitchell & Anderson

Thomas, Walnut Creek, all of Calif.

[22]

3,946,220

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quantlties into the computer’s permanent memory.

13 Claims, 12 Drawing Figures 22

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3,946,220 1 POINT-OF-SALE SYSTEM AND APPARATUS

record, display and price customer orders as received. In the preferred form of the invention shown and de

The invention relates to a system for entering cus

scribed herein, the system is intended for use in a so

tomer orders at point-of-sale stations, processing and

called fast food retail outlet. As seen from FIGS. 1, 2 and 4, each of the keyboards

recording said orders in a central computer and return

ing processed order information to said station for

10 comprises a generally rectangular casing 22 having

display.

a desired number of individually operable keys or but tons 24 provided thereon. The casing 22 is adapted to

In brief, the invention comprises a system having one

be positioned on a counter immediately in front of the clerk or operator and between the clerk and a customer on the opposite side of the counter. As shown, the

or more keyboard terminals at point-of-sale stations in communication with a central computer. Each key

board terminal has a plurality of manually operable keys for designating the various items offered for sale. A plurality of display devices are provided on the key board and each item key has an associated display device for displaying the number of items being or

casing 22 is of a type commonly used in desk top calcu lators. The upper surface 26 of the casing has two op

positely sloping portions 28, 30. The larger portion 28 slopes downwardly toward the operator and contains

dered. Means are also provided for generating an iden~

the keys or ‘buttons 24 operated by the clerk when

tifying signal speci?c to each key when said key is

taking the customer’s order. The smaller portion 30 slopes toward the customer, away from, the operator,

actuated. Logic means in the computer actin response to said signals to cause the display devices associated with the actuated keys to display the number of items ordered. The keyboards may also be provided with numeral keys and, in such case, item quantities may be entered by successive actuation of the item keys, or, alternatively, by the actuation of a numeral key fol lowed by the actuation of an item key. In the latter

and contains a display window 32 in which is shown the 20

25

case, the computer logic means will cause the asso

price of the order. In the embodiment shown in the drawings the key board is arranged so as to provide 10 numeral keys 34, 40 item keys 36 and 8 function keys 38. There is an associated display window 40 for each item key and for certain function keys. The particular number of keys and the speci?c arrangement of the keys on the key board may be varied as desired. In the device shown, the numeral keys 34 are arranged in a single row at the

ciated display device to display a number correspond ing to the particular numeral key actuated. Provision is also made for a plurality of function keys on the key

operator’s left. The item keys 36 are arranged in five

board tenninal for designating such steps as cancel 30 rows and occupy the center of the keyboard. The func tion keys 38 are positioned in a single row at the opera order, total sales price or store and recall order. tor‘s right. Additionally, a display window 42 is pro In the drawings: vided above the keyboard facing the operator so that FIG. 1 is a plan view of one form of a keyboard termi the operator may also see the price of the order when nal, partly in section; FIG. 2 is a sectional view through the keyboard ter 35 displayed therein. As is more fully described hereafter, the keyboard is constructed and sealed against the minal of FIG. 1; entry of spilled drinks, condiments, salt, and other food FIG. 3 is a schematic representation of one cycle of items. computer operation; Each keyboard terminal 10 is associated with a cash FIG. 4 is a transverse sectional view through the 40 drawer 12 that is preferably mounted underneath the keyboard terminal of FIG. 1; counter upon which the keyboard rests. The cash FIG. 5 is a front view of the control switch on the drawer 12 is controlled by the keyboard terminal so control chassis for the system; that access to the cash drawer is under the control of FIG. 6 is a plan view of one form of menu sheet that the keyboard at all times. For the present invention the may be used with the keyboard terminal of FIG. 1; FIG. 7 is a plan view of the upper circuit board of the 45 cash drawer need not be modi?ed from its standard

keyboard terminal shown in FIG. 1;

form as the cash drawer serves the same purpose in the

FIG. 8A is the left hand portion of a schematic dia gram of the lower circuit board of the keyboard termi nal shown in FIG. 1; FIG. 8B is the right hand portion of a schematic 50

present invention as it customarily does in other sys tems. It is preferred that the cash drawer be magneti

cally operated, that is, that the cash drawer ordinarily be maintained in its closed condition by an electrically

operated magnetic system which is under the control of the point-of-sale system.

diagram of the lower circuit board of the keyboard

terminal;

The keyboards l0 and their associated cash drawers FIG. 9 is a wiring diagram of one form of display 12 are each electrically connected to a control chassis device which may be used in the keyboard terminal; 55 14. In the preferred form of the invention shown in the FIG. 10 is a block diagram of the system; and drawings, two keyboards and cash drawers may be FIG. 11 is a plan view of the circuit board for the operated off one control chassis. However, the number computer showing the central processor unit and the of keyboards and cash drawers which can be operated read-only memory (ROM) and random-access memory from a particular chassis can be varied as desired. For (RAM) banks. 60

GENERAL DESCRIPTION

The point-of-sale system of the present invention (FIG. 10) includes one or more keyboard terminals 10 with associated cash drawers 12 in communication with a control chassis I4 having a micro-computer 16,

example, each keyboard terminal and its associated cash drawer can be interconnected and arranged to run

with only one control chassis provided the control logic capability of the computer utilized in the chassis is sufficient to handle the number of keyboard terminals. Alternatively, the components making up the chassis

printer I8 and power supply 20.

may be modified. For example, one control chassis may

The keyboard terminals I0 are adapted for use at a point-of-sale counter window or station and function to

be provided with a printer while additional control chassis may omit this component. In such an arrange

3,946,220 3

4

ment the control chassis not incorporating a printer would be connected to the printer component in the

OPERATION OF THE KEYBOARD TERMINAL As seen from the preferred embodiment of the inven

master control chassis so that the information fed into each control chassis could be retrieved in the form of a

tion shown in the drawings, the manually operable keys are arranged with 10 numeral keys 34 in a single row at

printout. In any event, it is necesssary that the control

the left-hand edge of the keyboard. These keys provide 10 single unit numerals, 0 through 9.

chassis arrangement provide the necessary control

logic function, printout capability and emergency power supply for the keyboard terminals and cash drawers used in the system. In the preferred embodiment shown and described herein, the micro-computer 16 is made up of a single chip MOS 8-bit parallel central processor unit that is

At the center of the keyboard, 40 food item keys 36 are provided in 5 rows of 8. These food item keys 36 10 are covered with a menu sheet 39 (FIG. 6) that carries abbreviations for a selected group of food items. For

example, the position for the ?rst food item key 36 at the upper left comer of the menu sheet bears the ab breviation “l-IAMB." This stand for the food item —

interfaced with standard semi-conductor memory units of both the random-access and read-only types. These components are combined on a single printed circuit board 44 (FIG. 11) to form a computer assembly capa

hamburger. The food item key position immediately below bears the abbreviation “CHB." This stands for the foot item — cheeseburger. Other key positions are

provided with similar notations to indicate regular and large orders of french fries, regular and large orders of add, subtract, perfonn logic and counting functions on 20 Coke, regular and large orders of an orange drink, regular and large orders of root beer, orders for choco and with these 8-bit numbers or bytes. It is preferred to late, vanilla, or strawberry milkshakes, one-quarter use the 8008-] 8-bit parallel central processor unit pound hamburgers, one-quarter pound cheeseburgers, manufactured and sold by Intel Corporation. The fea ?sh, apple pie, milk, coffee, and other similar food tures and operation of this central processor unit are ble of performing the functions of a digital computer.

The micro-computer works with 8-bit numbers and can

described and illustrated in a “User's Manual” entitled 25 items. In the menu sheet for the keyboard shown in the

drawings, 40 food item keys are provided but, as previ

“8008 8-bit Parallel Central Processor Unit, MCS-8

ously indicated, additional key positions may be pro

Micro-Computer Set" published November 1972 by Intel Corporation. This central processor unit can di rectly address more than 16,000 bytes of external memory of any kind, such as magnetic core, magnetic drum, or semi-conductor memories. In the preferred embodiment semi-conductor memories of the read only type 46 (ROM) and random-access type 48 (RAM) are employed. The read-only memory units are employed for program instructions and the random-ac

vided and arranged as desired. It will also be noted that

certain key positions bear no notation. These key posi 30 tions may be used for special food items that are added

after the system is installed. All notations can be changed by store personnel in a simple and easy man ner.

The position of each food item key 36 is covered by 35 a colored circle 50 which indicates to the operator the

point to press in order to actuate the key. Each food

cess units are employed for data storage and certain control functions.

item key 36 is also provided with an associated display device 52. As shown in the accompanying drawings, the display device 52 in the preferred embodiment of the invention comprises a digital numeral display. One particular numeral display device which may be used in the invention comprises seven incandescent lighting

The central processing unit contains internal data registers which are used for counting and operation. The unit also controls the external devices of the pre sent system such as the keyboard terminal readings,

strips or bars 54. When the strips 54 are lighted in printer control and the display windows associated with proper combinations, the device 52 can display the the item keys. The central processor units requires approximately 12.5 micro-seconds per instruction, 45 numerals 0 through 9. The display device 52 also incor

porates a small dot 56 positioned beneath the numeral display for the indication of numerals in excess of 9. Other combinations of keys and displays can be used.

which means that it can process in the neighborhood of

80,000 instructions per second. The printer 18 in the control chassis 14 may be of any suitable commercial type. In the preferred form of the invention shown and described herein the printer is a SEIKO series 101. This model is a two-tape printer with

Keys using a ?exible conducting sheet, keys using reed 50

cross-bar switches, keys operated by the movement of magnets or capacity sensitive keys may be used.

a split drum and there are 10 columns of characters for

each tape. The split drum rotates continuously and carries the typeface for printing the desired characters. Printing is effected by pressing the paper tape and character ribbon against the typeface by means of actu ating hammers. The hammers are driven by electro

55

Correspondingly there are many types of numerical displays than can be used. These include displays

formed of individual lamps, displays using projection of images of numerals, light-emitting diode and liquid crystal displays and gas discharge displays.

magnets powered by transistor ampli?ers under the control of the computer. Magnetic pick-ups sense the drum position and inform the computer when the ham

switches or switches with mercury-wetted contacts, keys using metal contacts in air such as leaf-spring or

60

At the right-hand edge of the keyboard 22 a series of function keys 38 are provided. The top three keys are

designated “grill 1,” "grill 2,” and “grill 3.” Beneath

mer magnets are to be pulsed to print desired ?gures in these keys are additional keys for the following func tions: “cancel order"; “clear error”; “no tax" item; the desired columns. “total" and “open drawer." The four function keys, A power supply 20 in the chassis l4 supplied power for all of the circuits. In addition, a storage battery is 65 “grill 1,” "grill 2,” “grill 3,” and “no tax" also have associated display devices, however, the display de included in order to maintain the information in the vices do not display digital numerals. The display de RAM memory units in case of a power failure of limited vices 58 associated with these function keys are merely duration.

Hill»

3,946,220 5

time, the sale is recorded and the various items incre mented to the running totals maintained in the com puter memory. When the clerk is ready to collect the

lights to indicate when the function keys has been actu ated. There are no display devices associated with the numeral keys 34 nor with the function keys: “cancel order,” “clear error,” “tota “ and “open drawer.”

customer’s money the “open drawer” button is pressed and the cash drawer beneath the keyboard terminal is opened as previously described. When the “total" key is actuated, the sale is recorded by incrementing the

ORDER ENTRY

As previously mentioned, the keyboard 22 is adapted

appropriate running totals; the audit tape prints the

to rest on a counter in front of the clerk and between the clerk and a customer placing an order. As the cus

keyboard number (1 or 2 in the preferred embodi ment), the amount of tax, the amount of sale including tax; and the display windows 32, 42 display the amount of sale including tax. When the “open drawer” key is

tomer gives the clerk the order, the clerk enters the

order by pressing selected key positions on the key board tenninal. When an item, such as hamburger, is

actuated without the preceding actuation of the “tota "

ordered the item is entered by pressing the hamburger key position. This entry mode applies to all food item

key, a “total” key is internally simulated before the “open drawer" key is acted upon. The result is the

keys, hence, to enter an order for a hamburger regular french fries, and a vanilla milkshake, the clerk or oper

same as though a “total" key had been physically actu

ated before the “open drawer" key. The “open

ator will press the hamburger, regular fries, the vanilla shake food item keys. As each food item key is pressed for the ?rst time, the numeral 1 will appear in the asso

ciated display device 52. Multiple quantities of food items may be entered by

20

the clerk or operator in either of two ways. The clerk may depress the foot item key 36 as many times as the item is ordered. Thus, if the customer wishes 5 hambur

drawer” and “total” function keys will not operate until a food item key is depressed subsequent to the last actuation of the “open drawer" function key. A new order is started by pressing either a quantity key or a foot item key. When this is done, the displays are cleared to black and the cycle starts anew.

gers the clerk may enter 5 hamburgers by pressing the 25 hamburger food item key 5 successive times. As the

ORDER CHANGES The above description assumes that quantities and

food items are entered without change. Provision is made for changes in orders, either because the cus tomer has changed his mind or because the clerk makes numerals l, 2, 3, 4, and 5. Alternatively, an order for 5 hamburgers can be entered by ?rst pressing the nu 30 a mistake in entering the customer‘s order. Changes

hamburger food item key is depressed successively, the associated display device will sequentially show the meral key 5 and then the hamburger food item key.

can be made up to the time the “total" or "open

device utilized in the preferred embodiment only dis plays single digit numbers. For quantities 10 to 15 the

tional quantities have been entered, or by ?rst pressing

drawer" function keys are actuated. No entries are When these keys are pressed in this sequence the nu recorded in the computer memory until either the “to meral 5 will appear in the associated display window 40 tal" or "open drawer" key is actuated. at the time food item key is depressed. 35 If the order change involves increasing the quantity In the preferred form of the invention shown and of a food item ordered this may be accomplished either described herein, the maximum quantity that can be by actuating the food item key again until the addi ordered is 15. This is true even though the display

device displays the second digit in the number as well

a numeral key corresponding to the new quantity and 40

then again pressing the desired food item key. In either

as a dot 56 beneath the display. The dot signi?es a ?rst

of these ways, additional quantities can be added to the

digit of 1. Thus, the quantity 10 is indicated by the display of the 0 numeral and the lighted dot beneath the display. The quantity 15 is indicated by a display of

quantities previously ordered. If it is desired to decrease or decrement the quantity of the previously ordered food item, this can be done

ing orders for quantities in excess of 9 the clerk ?rst presses the numeral 1 key, then the second digit of the number. A zero quantity is indicated by a black space. The 0 numeral key must be accompanied by the actua tion of another number in order to light the display 50 device.

the proper food item key. This procedure will enter the new decremented quantity for that particular food item. Depression of a numeral key and then a food item key can be used to change the quantity ordered either

the numeral 5 with a dot beneath the number. In enter 45 by ?rst depressing the correct numeral key and then

In the above described manner, the clerk enters the

up or down.

Individual food items may be cancelled without af

fecting the remainder of the order by depressing the 0 numeral key and then the food item key. The display

quantity and food items selected by the customer until device associated with the food item will then go black. the customer's order is complete. When the order is complete and the customer is ready to pay, the clerk 55 The entire order may be cancelled by pressing the “cancel order“ function key at the right edge of the depresses the “open drawer" function key. When the keyboard terminal. When this function key is actuated “open drawer" function key is depressed the total price all displays go black and the revised order may then be of the customer‘s order, including tax, is displayed both to the customer and to the clerk and the cash drawer

entered in the manner described above.

clerk but the cash drawer will not he opened. At this

quent customer orders.

beneath the counter is automatically opened. The clerk 60 ORDER STORAGE AND RECALL may then take the customer's money, make change and The keyboard terminal has the capability of storing close the cash drawer. If the clerk wishes to display the orders for later recall. This capability is desirable if the total price of the customer’s order but is not yet ready order includes a food item that will require extra time to collect the money, the clerk may alternatively press the‘ "total" function key. Pressing the “total" function 65 in preparation. In the present invention, orders may be entered and stored inde?nitely without interrupting or key will cause the total price of the customer‘s order, interferring with the use of the keyboard for subse including tax, to be displayed to the customer and the

3,946,220 7

8

Once a customer's order is entered on the keyboard in the manner previously described, it may be stored for later recall either before or after payment. If the order is to be stored prior to payment, one ofthe "grill"

since this is an illegitimate sequence. The order will not be stored. When the operator sees the error display, he or she is informed that an illegitimate sequence has been at

tempted and the desired operation has not been carried

function keys is pressed after the order is taken and entered but before the “total” function key is pressed.

out. The error display condition can be corrected in either of two ways. The operator may press the “order

If no previous order is in storage, the operator will press

cancel“ function key to clear all displays to black. This clears the keyboard terminal for any legitimate se quence. Alternatively, the operator may press the

the “grill 1" function key. When the “grill I” function key is pressed, the displays for the ordered food items will go black. At the same time, the display light 58 associated with the “grill 1” key will come on to indi cate that a food order has been stored in the “grill 1” location. The keyboard may then be used to take, price and record additional customer orders. These orders may be take and cleared in the normal manner previously described. Several orders may be taken and cleared while the stored order is retained in “grill 1” location. If it becomes necessary to store another order, the

operator stores the order by pressing the “grill 2” func

“clear error" function key. This cancels the attempted illegitimate sequence without clearing any of the previ ous legitimate sequences. The keyboard is then re turned to the same condition it was in immediately

prior to the attempted sequence. Additional entries and sequences may then be performed as though the erro neous function has never been tried.

20

tion key. The associated display light comes on to indi'

be performed on random occasions as desired. For the

cate that there is now a stored order at the “grill 2” location. Inasmuch as there are three order storage function keys, up to three orders may be stored at a

time. If desired, additional storage capacity can be

MANAGERIAL FUNCTIONS The control chassis 14 for the point-of-sale system is adapted to permit a number of managerial functions to most part, these manager functions involve the printout of various data accumulated and stored in the com

25

provided. An order may also be stored after payment. In such a case, the order is processed as previously described and

puter. Provision is also made for correcting cash drawer errors and changing both prices and the auto matic tax computation. For these purposes the control chassis 14 is provided

with a control switch 60. Accesss to the panel is limited cash drawer. The operator takes the customer‘s money 30 to the manager by a multiposition key switch which is operable solely by a special key in the possession of the and places it in the cash drawer. The operator then manager. Insertion of the key into the switch 60 is presses the appropriate “grill" function key to store the

the “open drawer” function key is pressed to open the

necessary to move the switch to the various control

order while it is being prepared.

positions.

To recall a stored order, the operator presses the

appropriate lighted “grill” function key. The associated display light goes out indicating that that particular

35

“grill” location is available for the storage of another order. At the same time, the stored order will be redis

Five control positions of the keyswitch 60 are pro vided in the preferred embodiment of the invention, shown and described herein. These positions are desig

nated "Manager," “Normal," “Correction 1,” “Cor rection 2” and “Standby." When the system is in use the keyswitch is turned to the “Normal” position. In this position the system is connected to the power sup ply of the store and power is supplied to the keyboard terminals, the computer, the printer and the cash draw

played by the various food item display devices exactly as it was taken prior to storage. If the order was stored

prior to payment, it is completed by the operator as though it has not been stored. Ordinarily, this will only involve the pressing of the “total" or “open drawer” function keys. Additional food items or quantities may

ers. When the store is closed the keyswitch is turned to be added, however, if necessary. If the order was stored 45 the “Standby" position. This cuts off all power to the system except for the computer to which power is al after payment, the total order is again displayed, but ways maintained. l'lloving the keyswitch out of the dollar amount which would normally appear in the

price display window 32, 42 is replaced by the notation

“Standby" restarts the computer program at address

“PPP” indicating that the order has been paid for.

O00 O00.

is in either the “Normal” or "Standby" positions, but may not be removed when the switch 60 is turned to

the other switch positions.

order is stored, pressing that function key has not ef 55

fect. ERROR DISPLAY

The operation sequences described above, as well as

certain other sequences described later, constitute “le gitimate" sequences which the computer is pro grammed to recognize. Any other sequences are “ille gitimate” and are not recognized by the computer. Illegitimate sequences resulting from error or unfamil~ iarity with the operation of the keyboard terminal are indicated by the display of the notation “EEE“ in the order price display window 42. For example, if the operator attempts to store an unpaid order after press

ing the “total" key, the error display "EEE” will appear

ill!

'

The manager’s key may be removed when the switch

The price of an order cannot be stored and redis played. An order can be recalled only if the keyboard has been cleared. If the operator attempts to store an order in one of the “grill" locations where an earlier

60

ERROR CORRECTIONS Provision is made for the correction of erroneous entries on the part of keyboard operators. Erroneous entries can be deleted when the manager’s control

switch is turned to the appropriate correction position. A correction switch position is provided for each key board terminal connected to the control chassis. To make a correction the manager inserts his key into the control switch 60 and turns the switch to the proper

keyboard correction position. In this position the key 65

cannot be removed from the switch. “Cor" is displayed

in the price display window 32, 42 of the keyboard terminal. The order to be corrected must be displayed on the keyboard. Pressing the “8” and then “9” nu~

3,946,220 9

10

meral keys automatically corrects the cumulative data

a taxed item but is to be changed to a no tax item the

in the computer since the incorrect amount is sub tracted from each of the individual items being totalled

“no tax" function key will not be lighted. If it is then

by the computer. Corrections also appear on computer printouts with a minus sign. A cumulative corrected sales value is maintained and this total is adjusted every

as a no tax item when the price is changed. If the change is the opposite, that is, from a no tax status to a

time a correction is made.

change the tax status the “no tax" function key is pressed. The lighted key will go dark and the item will

pressed, the key will light and the item will be entered taxable item, the “no tax" function key will light up. To

Since the key cannot be removed from the switch 60 in any of the correction positions, the switch must be returned to the “Normal’‘ position before the manager

then be entered as a taxable item when the new price is

can retrieve his key. This procedure guards against the

entered. A printout of the food item prices can be obtained

chance the control chassis will inadvertently be left in an inappropriate operating condition.

any time during the price change mode by pressing the “total” function key. Any price changes will be indi cated by the letter “c.” To leave the price change

DATA MODE 15 mode, the manager presses the “cancel order” function key. This causes the prices to be printed if a change A data mode switch location is provided which the were made.

manager may use to retrieve data stored in the com

puter, to clear certain registers and to change the price and automatic tax computation functions of the key board terminals. Each of these operations is initiated by a particular submode programmed into the computer

20

and carried out at the keyboard terminals. Initiation of

these submodes is effected by turning the manager’s key to the “Manager" switch position and then by pressing selected terminal keys. To obtain an hourly report the “grill 1" function key is pressed. This puts the keyboard into an hourly report submode and the letters “Hly” are displayed in the price display window.

25

TAX CHANGE To enter a change in the automatic tax computation

function, the manager’s keyswitch is first turned to the “Manager” position. The “no tax” function key in the keyboard terminal is then pressed to put the keyboard into the tax change mode. This is indicated in the price display window 42 which displays the letter “tCh”. When the keyboard goes into the tax change mode, the visual display devices associated with the first ?fteen food item keys will show the numbers 1 through 15 in

sequence. At the same time, the letter “r” will appear To obtain a daily report submode the “grill 2” function key is depressed. The display window 42 will show the 30 in the top display device in the center row of the key board and the letter “d" will appear just below it. letters “dLY." To obtain the produce mix submode the To set the initial tax bracket, whatever it may be, the “grill 3” function key is actuated. This action causes manager enters the lowest amount upon which the tax the letters “Pro" to appear in the price display window. is one cent. To do this, the manager enters the amount

When the desired submode is obtained, the designated

report is printed by pressing the “total” key. The report

35

is cleared by use of the “open drawer" key. The hourly report gives the total gross sales and the

by pressing the proper numeral keys at the left of the keyboard. He then presses the food item key opposite the display device showing the numeral 1. The lowest

total net transactions which have occurred since the

tax bracket amount figure will then appear in the total

last hourly report was taken. The daily report gives the

price display window and the numeral 1 will be dis played opposite the food item key at the upper right

gross sales, non-taxed sales, tax collected and customer 40 corner of the keyboard. This display informs the man count for each keyboard since the last clearing opera ager as to which tax bracket is being displayed. This tion. It also shows the prior year-to-date gross sales, the procedure is then repeated for the other 14 tax brack~ prior year-to-date tax collected, the prior year-to-date ets. non-taxed sales and the number of manager deletions for the keyboards. The produce mix report shows the 45 The lowest taxable amount for any tax bracket can be

displayed without change by simply pressing the appro—

quantity of each item sold since the last clearing opera tion was performed.

priate food item key. In such a case, the amount will be

displayed in the total price display window. Hence, by

PRICE CHANGE

The “Manager" position is also used to make price and tax changes. To make a price change the keyswitch is turned to the “Manager" position. Thereafter, the “spcl. 3” food item key is pressed to place the key board in the price change mode. The display will show “PCh“ to indicate that the keyboard is in the price change mode. Entry of a new price is accomplished by pressing the proper quantity keys and then the food item key repre senting the item being changed. When this is done the new price will appear in the total price display window

?rst displaying the amount in this manner and then 50

the proper tax computation function for the store can

be visually checked by the manager. If the taxable amount for any particular bracket needs to be changed, it may be done in the manner described. 55

keys. If the item being changed was a no tax item, the “no

tax" function key display device will light up. If it was

To set the applicable tax above the 15th bracket, the manager enters the tax on $4.00 by pressing the proper

numeral quantity keys. He then presses the food item key opposite the display with the letter “r. " The man ager next enters the lowest amount of the next tax

bracket above $4.00 by using the quantity keys and by then pressing the food item key opposite the display

42 and, at the same time, the letter “P" will appear in the display device 52 associated with that food item

key. To read the old price being changed prior to entry of the new price, the particular food item key is pressed before the new price is entered through the quantity

comparing it against the applicable tax table or chart,

with the letter “d.“ 65

Entry of these items into the computer enables the computer to apply the proper tax computation for al most every tax jurisdiction in the United States. It has been found that existing tax structures above $2.54, or the lowest taxable amount in the lSth bracket, which ever is less, apply the authorized tax rate calculated to

3,946,220 1l

12

concurrently with the ?rst display device to simulta

the nearest 1/4 of l per cent in one of three ways. 1. In one method, the tax on whole dollars is calcu

neously display the price of the order to the keyboard operator. Additionally, the keyboard housing has a large rectangular opening 70 which accommodates the various keys and their associated visual display devices. The keyboard construction, in the preferred embodi ment of the invention shown in the drawings, comprises

lated by application of the tax rate. The tax on any

remaining fraction of a dollar is determined according to the particular tax bracket breakdown between $1.00 and $2.00, minus the amount of tax on $1.00.

2. In another method, the tax is calculated according

a three-tiered assembly adopted to fit within and under

to the authorized rate and, when the result is a fraction, always rounds up to the next whole cent.

3. In the third method, the tax is calculated by apply

neath the rectangular opening 70 in the housing 22. The lower and middle tiers comprise printed circuit

ing the authorized rate but when the result is a fraction,

boards 72, 74 connected together in parallel spaced

the tax is rounded, up or down, to the nearest whole

relationship by screws 76 and cylindrical posts or spac-'

cent.

ers 78. Rectangular bars 80 formed from an electrical

Entering the tax on $4.00 determines the authorized

insulating material are mounted along the peripheral edges of the upper surface of the upper printed circuit board 72. The bars 80 locate the keyboard assembly relative to the housing 22 by bearing against the under surfaces of the housing 22 de?ning the rectangular opening 70. A sponge rubber gasket 82 is placed be

tax rate. Since the tax rate is calculated to the nearest

1/4 of l per cent, the use of $4.00 will always determine the rate to the necessary accuracy.

Entry of the next lowest tax bracket amount above

$4.00 determines which of the three methods of appli cation is being used. If that amount is $4.01, this identi 20 tween the housing 22 and the bars 80 to effect a liquid ?es the second method-one where the fractional tax is always rounded up to the next whole cent. If the

tight seal that protects the keyboard assembly against

penetration by spilled beverages.

amount is equal to $4.00 plus the quotient of 0.5 di

The third, or uppermost, tier 84 of the keyboard

vided by the tax rate expressed as a percentage, or

equal to that amount rounded up to the next whole cent, the method being used is the third method. If the

25

amount of the tax bracket about $4.00 does not indi cate either the second or third method then by the

process of elimination, the ?rst method is being used. In this way, the computer is able to identify the tax method used with respect to amounts over $2.00 and can apply whichever method is indicated. By reason of

assembly comprises the switches and the display de vices for the keyboard as well as the covering sheets which protect and identify them. There is a switch 34, 36, 38 for each key in the keyboard and for most of the keys there is an associated display device 52. The par ticular form of the switches and display devices is not of critical importance since many different types may be

used. As previously explained the keyboard in the pre ferred embodiment contains ten numeral keys, forty this capability, the present point-of-sale system can be food item keys and eight function keys. There is an used without modi?cation almost anywhere in the associated display device 52 for each of the food item United States. This is an important feature for chain or 35 keys 36. These display devices are adapted to display franchise operations that are nationwide in scope. the numerals 0 through l5 and also certain letters. In However, in the particular embodiment of the inven the form of the invention shown and described herein, tion shown and described herein, the computer is pro the switches employed are of the snap-action type. grammed only for the second method—-the round up These switches comprise circular metallic disks that are method. normally bowed upwardly. Downward pressure on the A printout of the tax table can be obtained any time disk, however, brings the center of the disk into en during the tax change mode by pressing the “total” gagement with electrical contacts to complete a circuit function key. Any tax bracket changes will be indicated and generate an identifying signal speci?c to that par by the letter “c." ticular key. Removal of the pressure causes the disk to To leave the tax change mode, the manager presses 45 snap upwardly to its normal bowed condition and inter the “cancel order" function key. This causes the tax rupts the engagement with the contact. As shown, the table to be printed if a change were made. switches 34, 36, 38 for the keys are mounted in longitu dinal strips on narrow printed circuit boards 88. There CONSTRUCTION OF KEYBOARD TERMINALS is a strip of switches for each row of keys. The strips are 50 Each keyboard terminal consists of a stainless steel fastened to the upper printed circuit board 72 in spaced casing or housing 22 of the type normally utilized in relationship by means of screws 90 and spacing posts desk top calculators. The casing 22 has sides 62 and a

92. Immediately adjacent the switches are the visual rounded. The upper surface 26 of the housing 22 is inclined in two directions. One inclined surface 28, the $5 display devices 52. The display device utilized in the preferred embodiment of the invention employs seven greater of the two, inclines downwardly, toward the separate incandescent lighting filaments which can be operator. The other inclined surface 30 slopes in an top 64 but no bottom. All corners and edges are

opposite direction, toward the customer. The front, back and sides of the casing are generally vertically disposed. There are three openings in the upper in clined surfaces of the housing. One opening 66 is lo cated in the inclined surface facing the customer. This

selectively lighted to form the numerals 0 through 9 (FIG. 9). Each display device is a separate unit and is

60 inserted into a socket strip 94 soldered to the upper

surface of the upper printed circuit board 72. Addi tional display devices 52 are mounted on the upper

opening accommodates a total price display device 32

printed circuit board beneath the operator’s price dis—

sloping toward the operator. This opening likewise

32. This display device is sealed against the entry of liquids in the same way as the operator's keyboard.

play window 42. Similarly, still other display devices 52 and fonns therewith a window wherein the customer can observe the price of his order. A similar opening 68 65 are mounted upon another printed circuit board 96 positioned below the customer‘s price display window is formed at the upper or outer edge of the surface 28 accommodates a visual display unit 42 which operates

llllll

3,946,220 13

14

printing operation lasts approximately 0.525 millisec

The keyboard is covered with three layers of plastic

onds.

sheeting (not shown) so as to present a smooth wear

As shown in FIG. 9, the lighting displays used in the

surface to the operator. A clear plastic sheet forms the bottom layer and an intermediate plastic menu sheet is positioned over this. The intermediate menu sheet 39 is

preferred embodiment of the invention consist of seven separate incandescent strips, or bars 54, which can be

a translucent white with clear window portions 40 posi tioned over the display devices 52. Printed legends for the identi?cation of the various keys are carried by the

There is also a dot S6 at the bottom of the device which is used to indicate a number greater than 9. For exam

selectively lighted to form the numerals 0 through 9. ple, the dot 56 is lighted with the strips or bars 54 de?ning the numeral 1 whenever the numeral II is intended. Any or all of the eight display elements may be selectively lighted to thereby form a visual display of

menu sheet. Yellow circles 50 are also placed on the

menu sheet. These circles overlie the snap-action switches and serve to locate for the operator the opera ble switch portion of each key. A top sheet of a clear, tough plastic is provided over the menu sheet to take the wear from the operator’s use of the keyboard.

any desired numeral up to 15. The strips or bars 54 may

also be selectively lighted to form certain letters. The keys and their associated display devices are

The keyboard assembly is secured to a closure plate 98 for the bottom of the terminal housing 22. The closure plate is arranged so as to permit the keyboard assembly to be dropped a short distance downwardly away from the housing to permit the changing or re

placement of the protective covering sheets of plastic.

identi?ed and located for the computer by means of three sets of letter coordinates (see FIG. 7). Each of the keys has an X coordinate and a Z coordinate. There are 16 X coordinates starting with X0 and ending with 20

X,,,. There are 4 Z coordinates, Z, through Z4. For the

INTERROGATION OF THE KEYBOARD

display devices, there are 16 X coordinates and 3 Y coordinates. Each Y coordinate is further divided into

TERMINALS AND COMPUTER OPERATION OF THE ASSOCIATED DISPLAY DEVICES

eight separate segments identi?ed by the letters a, b, c,

banks are programmed to handle several uses on an

individual display devices 52. Scanning of the keys of a keyboard and the lighting of the associated display devices is initiated by an output

d, e, f, g, and t. These letter segments are keyed to the The central processor unit and its associated memory 25 seven incandescent strips 54 and dot 56 making up the

allocation basis. Allocation is accomplished in a man ner which permits the simultaneous use of two key

signal from the computer to the keyboard. The com puter output signal carries 32 bits of data which serve

boards and a printer without any noticeable delay in

the functioning of the individual units being served. Thus, the central processor unit and memory banks

to interrogate the keyboard and to designate which

function to sense key actuations on both keyboards,

display devices are to be lighted. The ?rst 24 data bits

light all display devices as required, operate the printer and perform all calculations and other logic sequences

are used to carry the instructions designating the Y

called for by the keyboard operators and/or store man ager, without causing any noticeable delays at the printer or either keyboard. To accomplish this, the computer is programmed to service the keyboards and the printer on a time-sharing basis. Because of the necessity of servicing the key boards and printer separately, the operation of the computer consists in continuous repetitions of the cycle shown in FIG. 3. That cycle consists of a ?rst scanning sequence 100 having two phases; a ?rst phase in which the keys and display devices of keyboard 1 are scanned, and a second phase in which the keys and display devices of keyboard 2 are scanned. After the scanning sequence 100 is completed the computer next carries out a processing step 102 in which various logic sequences for keyboard 1 are done as required. The

processing step 102 is followed by a second scanning sequence 104 just like the ?rst in which the keys and display devices of keyboard 1 are scanned and then the keys and display devices of keyboard 2 are scanned.

coordinates and the letter segments of the display de 35 vices that are to be lighted. The next four data bits

(through the use of a 4 to l6 decoder) designate one of

the 16 X coordinates. This designated X coordinate

then serves to identify the keys being interrogated by the computer on each output signal as well as the par

ticular display devices to be lighted in response to pre viously sensed key actuations. The ?nal four data bits of the output signal are blank so that the keyboard may impress upon these data positions the Z coordinate of

any key being actuated by the keyboard operator. 45

From the computer, the output signal passes in steps through seven TTL shift registers 112 (FIGS. 8A and 8B) and is then returned to the computer. The ?rst 8 data bits, or byte, will carry the Y, coordinates for those display devices identi?ed by a Y, coordinate. If no Y, display devices are to be lighted all 8 data bits will have a zero voltage. Since a positive voltage is

required to designate a particular display device, 8 blank data bits will pass through the shift registers I12

and return to the computer without turning on any This second scanning sequence is then followed by a 55 display devices.

second processing step 106 in which logic sequences

If one or more of the ?rst 8 data bits have been im—

for keyboard 2 are performed. A third scanning se

pressed with a positive voltage, that voltage will serve

quence 108 follows and, again, the keys and display

as an instruction that a display device having a Y, coor

dinate is to be lighted. Which Y, display device is to be step of the cycle, the computer executes a printing 60 lighted will not be known until the X coordinate is also identi?ed. The X coordinate will be identi?ed by the operation 110 in which any demands for the printer are ?rst 4 bits of the last 8 bit byte of the computer output satis?ed. At the end of the printing operation, the com signal. At the time the Y, coordinate instruction is puter starts on a repetition of the cycle by initiating devices of the two keyboards are scanned. In the ?nal

another scanning sequence 100. A complete cycle of

given to the keyboard, the particular letter segments

operations is made 213 times a second. One scanning 65 required to light the necessary strips or dot of the desig nated display device are also given. sequence and the following process or printing step The second 8 data bits, or byte, of the computer occurs 640 times a second. A scanning sequence lasts output signal carries the designating instruction for all approximately 0.975 milliseconds and a processing or

3,946,220 15

16

display devices having a Y2 coordinate. Similarly, the

interrogated in every 16 scans or, to put it another way,

third set of 8 data bits of the output signal carries the

45 times a second.

designating instruction for all display devices having a

The computer output signal imparts instructions to the keyboard for lighting the display devices and re ceives data on the Z coordinate of depressed keys only

Y3 coordinate. As mentioned above, the next 4 bits carries the instruction which will supply the X coordi nate necessary to identify the display devices to be

when the 32 data bits are located in the proper shift registers 112. A transfer of information occurs only

lighted and the particular keys to be interrogated.

when the ?rst 8 bit byte is in the position corresponding to the Y1 connections from the display matrix (FIG.

These 4 bits of data are fed into a 4 to l6 decoder 114

so that one of the 16 X coordinates is designated by

each computer output signal. The ?rst output signal of 32 bits will designate the X0 coordinate. There are three display devices that have this X coordinate. They are the devices having the coordinates XoYl, XoYz and XoYa. If any of the three Y coordinates are also desig nated, the devices so identi?ed will be lighted. The maximum number of display devices that can be lighted by one output signal from the computer is three.

0

5

8B). At the same time, the next 8 bits of data will be

aligned with the Y2 connections and the third 8 bit byte aligned with the Y3 connections. The next 4 bits of. data, carrying the determining X coordinate for both the displays and the keys, will be in shift register 4B (FIG. 8A) which is interconnected with the 4 to 16 decoder 4C. The ?nal 4 blank data bits will be in regis ter 68 ready to receive an output signal in the event an

interrogated key has been depressed. With the com The sixteen output lines from the decoder 114 are puter output signal so positioned, the “one shot" cir not only connected to the matrix 116 of the pin sockets 20 cuit 124 is actuated and the information carried by the 118 for the display devices 52, but are also connected signal is communicated to the keyboard and any input to the matrix 120 of pin sockets 122 for the keys on the

keyboard terminal. The designated X coordinate, in addition to identifying the display devices to be lighted, also identi?es the particular keys to be interrogated. Since there are four keys with the same X coordinate, each output signal from the computer serves to interro— gate four keys. As described earlier, there are 640

scanning sequences for each keyboard per second. It takes sixteen scans (sixteen computer output signals)

from the keyboard is impressed upon the last four blank data bits. The signal then is shifted in steps through the shift registers 112 to the computer. The

25

next following signal, bearing its instructions and deter mining X coordinate, follows behind. Its information will not be released to the keyboard, however, until the signal is properly aligned as described above. When so

30

to interrogate all keys (coordinates Xo through Xls). A complete interrogation of all of the keys in a keyboard

aligned, the “one shot" circuit 124 will be energized again and another transfer of instructions effected. An enabling circuit 126 is provided to protect the display devices 52. Since the incandescent strips or bars 54 are lighted intermittently, a higher voltage is impressed upon them to compensate for a decay in

is completed in l/40th of a second. This is a su?iciently short time to insure that all depressions of the keys will be detected. 35 brightness during the unlighted periods. Should move When a key is depressed, a circuit is completed ment of the computer output signal through the shift which impresses an input signal on the last four data registers 112 be interrupted and a signal left in the

bits of the computer output signal. If, for example, the

actuating position, the lights could be burned out. Ac cordingly, the enabling circuit clears the registers 112

operator presses the hamburger key, a circuit is com pleted between points 9 and 3 on the pin socket 2A

in such an event to protect the display lights. It should be noted that the X coordinates for the keys

(FIG. 7). Completion of this circuit sends a positive pulse through line 5 (FIG. 8A) to shift register 6B. This pulse impresses a positive voltage in the position of the 32nd data bit, thereby identifying the coordinate, Z4.

are not necessarily the same as the X coordinates for

the display devices. The hamburger key used as an example herein happens to have the same X coordinate When the output signal returns to the computer, the 45 as its associated display device. However, the X coordi~ locating coordinates XOZ4 are sensed and the computer nates for the remaining keys are, for the most part, knows that the “hamburger" key has ban actuated. It different from the X coordinates for their associated

will then send out an instruction to light the associated

display devices.

display device, XOYD the next time the computer sends out an XO output signal. With the make up of the keyboard shown in the drawings, there are 40 logical display devices for the food item keys, an additional 4 logical display devices

All pin sockets for keys having the same coordinates are interconnected in parallel. Thus, contact 9 on pin

socket 2A, having the coordinate X0, is connected in parallel to point 11 on socket 1A, point 10 on socket 6A, point 16 on socket PG 3 and point 4 on socket 4A. for the price display and 4 simple, single element light Actuation of the food item and numeral keys calls for bulbs 58, making a total of 48 display devices. Inas 55 the lighting of the associated display devices. When the much as three displays can be lighted during each scan computer receives a signal that a food item key has ning phase, only 16 scans are required to cover all been depressed, it ?rst looks to see if more than one key has been depressed at the same time. If so, the displays. In one second, any particular display device will be lighted 40 separate times since there are 640 computer lights the error display. If only one key has

available scanning phases per keyboard per second. This lighting frequency is fast enough to make the dis play appear continuous to the human eye without any

objectionable ?icker. During each scanning sequence four keys can be

60

been depressed the computer next looks to see if a numeral key has been depressed. If one has been actu ated, the display device associated with the food item lights the number corresponding to the particular nu meral key actuated. If the next preceding key actuation

interrogated. In 16 scans a total of 64 keys will be 65 was not a numeral key, the pressing of the food item key will cause the quantity for that food item to be interrogated. There are 40 food item keys, 8 function

keys and 10 numeral keys in the keyboard shown in the drawings. Accordingly, each key on the keyboard is

Hill

incremented by one. As explained previously, any quantity of a particular food item can be incremented

3,946.220 18

l7 by use of the numeral key corresponding to the new

provided in the random access memory. One location is

desired quantity followed by actuation of the food item key. Alternatively, the quantity can be incremented sequentially through repetitive actuations of the food item key. Decrementing can be accomplished only by

provided for the ?rst keyboard processing step, another location is provided for the second keyboard process ing step and a third location is provided for the printing

going to a lower quantity numeral key and then actuat ing the food item key. A particular food item can be

cancelled completely by pushing the zero numeral key and then the food item key.

operation. At the end of the ?rst scanning sequence — the one preceding the process step for keyboard 1 —

the computer is instructed to jump to the reference point, or location, for keyboard 1. The information stored at this address will tell the computer what it is to

do next. If, during the previous processing step, a logic

COMPUTER PROCESSlNG STEPS

sequence was completed and there is no pending oper

Each scanning sequence of the computer is followed with either a- processing step or a printing step. In the

processing steps, the computer carries out the logic sequences called for by the keyboard terminals. The time elapse for each processing step is 0.525 millisec onds and, in this time period, the computer can pass through 210 states.

Many of the operations involved in the processing step can be accomplished in 210 states or less, but the

ation, the computer will be free to start on a new de

mand should one be called for. However, if the opera tion in the last processing step was not completed, an instruction to carry on with another part or quantum of the operation would have been left in the random ac cess memory and the computer will be told to initiate the next quantum in the operation. In the same way, the

reference locations for the other keyboard processing step and the printing operation are programmed to

either carry on with their respective operations or to tell the computer to start upon another processing or calculation, require many more states. In such cases, printing operation. the processing operation has to be carried out over a To carry out the computer program, additional read number of processing steps. This means that an opera 25

more complicated operations, such as the total price

tion once begun is interrupted by further scanning sequences, by the processing step for the other key board and by the printing step. The program for the computer is designed to allow this interruption of the processing operation and is, accordingly, divided into

separate parts called quanta. Each quantum is a part of the program operation that can be accomplished within 210 states. Each quantum must be self-contained so at

only memory is required over that provided for on the printed circuit board of the central processor unit.

Accordingly, nine additional ROM units 128 were mounted at the left side of the printed circuit board 44 30 (FIG. 11).

,

During idle periods, the processor compares three identical copies of the price and tax tables, correcting any discrepancies that arise by majority logic. A cumu

lative count of detected errors is maintained and its conclusion, no information is left in the central pro cessor unit. The start of the next succeeding quantum 35 printed with the hourly report. in the operation must be set up so that the operation The complete computer program is set forth in Ap can be picked up and continued during the next pro pendix l and the various internal processor operating

cessing step for that keyboard.

instructions of the central processor unit are set out in

To do this, three'reference points or locations are 40 Appendix II. APPENDIX I

Program Legend

XXX O00

DDD: DDD:

XXX O10

DDD: DDD:

XXX 3 7O

DDD: DDD:

1 ROM No.5 Address The octal content

Contents

( DDD ) of ROM XXX from octal

address 000 to address 377 is listed from left to right and top to bottom. Each data word is termin

ated by a colon (

).

The address of only the first

data word in each row is provided.

000 .000 U10

030 O20 030 O30 O40

250: 131 I I31 : 007: 600 : 000: 000: 000 : 056: 010! 066: 31a: O36: i on: 373: 060: 076: 020: 060: 076: O03: 056: 01 2: 005: 127: I06: 240i O15: 066: 277: 056: O1 2 : 076: 002: O50: 076: 002 z 066: 377 : 046 r

3,946,220

20

19 O50 O60 070 100 l 10

120 130 :40 I50 I60 I70 200 2:0 220 230 21:0 250 26C) 270 300 320

150: 371:: 051 I 371:: 371:: 000 : 002: 300: 106: 375: :01:: l l l : 002: l l l : 01m: :60: 071:: 300: 300: 006: :00: 276: 004:: 076: 040:

050: 374:

277:

300:

3014:‘ 02a: 005: 065: 357: 076: :55: 101:: 007: 002:

0: 1 l

371 :

245:

022:

371 : 060: 066: 002: 3:6: 101:: 066: 375: 310: 2'30: 002:

076:

O6: :

076: 375: 066: 000: 036: :60: 076: 305: 060: 101:: 023:

1:2: 001 : 0:3: 002: 001 : 066: 010: 10“ 036: 006: 0:0: 371: 3:7: 0:0: 040: 060: 307: 066:

0140: 37a: 373: :06: 002: 066: 056: 372: 367 : 31:6: 150: 274:: 000: 036: 003: I10: 006: 271:: 370: 370: 066: 375: 250: 066: 370: l ‘.0: 162: 000: 1 56: 076: 02: : 0:3: 002: 066: 150: 260: 000: 356: 371 : 101:: 354: 066: 362: 375: 076: 021:: 101:: 007: 002: 0:0: :04: 007: 071:: 01:0: 150: 065: 375: 076: 002: 076: 020: 31:0: 000: 066: 100: V007 3 002: 01:14: 360: O76: 060: 37: : 036: 001:: 066: '375: :04: 007: 002: 0 : 0:3: 032: 0:6: O35: 002! 021 : O40: 005: 021:: O03: 0:0: 027: 04:6: 362: 076: 000: 076: 00: : :04:

372:

051 :

370: 0a: : 365: 066: 207: :00: 077: 21:: z 36: : 317 : 066: O56: 00: z 076: 000 : 066: 007 : 03b: 00a: 076: 1 17 : 036: 372: 367 : 307 : :06: 226: 005: 002: 101:: 007 : 307 : 263: :20: 320: 036: 01 I : 004: 005: 002: 370: 060: 37: : 270: 002: 036: 060: 076: 0:6: 036: 00!: 0'33: 04: I 007: 026: 04:4: 0:2: 03: : 01:7: 0:5: 031:: 00: : O20: 037: 076: 030: 066: 076: 072: 060: 066: 360: 347: 04: I

0146: 010: 061 : 066: 256: O76: 066: 375: 076: 357: 3:7: 006:

000: 0:7: 003: 022: 006: 025: 0: l : 030: 0:4: 033: 066: 360: 066: 375: 365: 00: :

0:2:

066: 365: 060: 307: 155: 307 : 007: 002: :04: 050: 036: 007: 37: I 036: 076: 006:

37A: :06: 310: 006: 074: 0:2: :50: 066: 375: 370: 066: :56: 076: 00: :

1:0: 0: : : :04:

:60: :04: :77:

036: :63: :04: 246: 011:: :65: 00: I 06: : 066: 375: 076: 007: 002: 060: 06: : 306: 066:

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